CODEWITHSUNDEEP
jspservlets
JavaLearner1
JavaLearner1

Reputation: 627

Logical error - JSP and Servlet

I have a list of 50 questions and request the user to answer any 25 questions of his choice. I am using JSP and Servlet for this purpose.

Here is my code:

<form action="Servlet1" method="post">

<%List questions = new ArrayList(); // This list has 50 questions

for(int i=1; i<questions.size(); i++)
 { %>
     Question Number: <% out.println(i); %><br><br>

     <%=questions.get(i)%><br><br>

     Answer:
     <input type="hidden" name="question" value="<%=questions.get(i) %>">
     <input type="text" name="answer"> <br><br>
     <input type="submit" value="submit" name="submit">
<% } %>

But in Servlet when I use request.getParameter("answer"); it gives me answer for only the recent question which is displayed, When the user answers some other question..it gets saved as blank (not "null" it get saved as " "-empty space) Also the question is also not getting saved accordingly. But when the user answers the recent question, both the question and answer gets saved..

I think its because some logic error..can anyone help me with a solution...

I want to save the question and answer in the database, whichever questions user answers..

Upvotes: 1

Views: 78

Answers (3)

Sudhir
Sudhir

Reputation: 1

Put submit button out side the loop it will send all filed value to your Servelt

Upvotes: 0

NiranjanK
NiranjanK

Reputation: 437

It is because you can not have same name with multiple input type . try appending some alias after your input name Like shwon below:

<input type="text" name="answer_<%=i>"> <br><br>

Upvotes: 2

bNd
bNd

Reputation: 7630

In the html, each element is identify either by name or id. but it must be unique. This code do loop on questions and it's everytime define same name which is answer for text input. so it will not create another one but override previous one text. Thus you have to use either i else another approach to make it unique like

 <input type="text" name="answer<%=i>"> <br><br>

you can get at server side like

for(int i=1; i<questions.size(); i++)
{
    String answer= request.getParameter("answer"+i)
    //add logic here
}

I hope this will help!!

Upvotes: 3

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